title: G.l.c.-m.s. of partially methylated and acetylated derivatives of L-glycero-D-manno- and D-glycero-D-manno-heptopyranoses and -heptitols.
abstract: Methylated or acetylated heptopyranose derivatives were prepared variously from L-glycero-D-manno- and D-glycero-D-manno-heptopyranose, O-L- glycero-alpha-D-manno-heptopyranosyl-(1----3)-L-glycero-D-manno- heptopyranose, O-L-glycero-alpha-D-manno-heptopyranosyl-(1----7)-L-glycero- D-manno-heptopyranose, and O-L-glycero-alpha-D-manno- heptopyranosyl-(1----7)-O-L-glycero-alpha-D-manno- heptopyranosyl-(1----3)-L-glycero-D-manno- heptopyranose, which are structural elements of the heptose region of enterobacterial lipopolysaccharides. Each derivative was investigated by g.l.c. and g.l.c.-m.s., and the retention times and fragmentation patterns were used to identify partial structures of the heptose region of the core oligosaccharide of bacterial LPS.
authors.affiliation: Forschungsinstitut Borstel, Institut für Experimentelle Biologie und Medizin, F.R.G.
authors.forename: O
authors.initials: O
authors.lastname: Holst
authors.forename: H
authors.initials: H
authors.lastname: Brade
authors.forename: K
authors.initials: K
authors.lastname: Dziewiszek
authors.forename: A
authors.initials: A
authors.lastname: Zamojski
mesh_terms: D000107:Acetylation; D002240:Carbohydrate Sequence; D004187:Disaccharides / Q000737:chemistry; D008401:Gas Chromatography-Mass Spectrometry; D006539:Heptoses / Q000737:chemistry*; D008745:Methylation; D008969:Molecular Sequence Data; D015394:Molecular Structure; D013237:Stereoisomerism; D013402:Sugar Alcohols / Q000737:chemistry*; D014312:Trisaccharides / Q000737:chemistry
chemical_list: D004187:Disaccharides; D006539:Heptoses; D013402:Sugar Alcohols; D014312:Trisaccharides